(CNN) With 253 days until the Iowa caucuses and a record number of Democratic candidates, the 2020 election is already in full swing. Every Sunday, I will compile the 5 BIGstorylines you need to know to understand the upcoming week on the campaign trail. As we all grill out and chow down on ice cream, the Democrats running for president will be doing the same. But remember this: The 2020 election will be a choice between Trump and the Democratic nominee. Debate season is a month away: One month from today, the first Democratic debate will commence -- the informal kickoff to the long sprint to the February 3, 2020, Iowa caucuses.

Source: CNN May 26, 2019 21:56 UTC